Electrical cabinet



i (No Model.)

' E. W. SMITH.

ELECTRICAL CABINET.

Patented Dec. 20,1881.

jmvaniar.

IhvtTnio STATES.

PATENT FFIQEO ELlPHALET W. SMITH, OF NEWARK, NEW JERSEY.

ELECTRICAL CABINET.

SPECIFICATION forming part of Letters Patent No. 251,071, dated December20,1881.

Application filed April 11, 1881.

To all whom it may concern:

Be it known that I, ELIPHALET W. SMITH, of Newark, in the county ofEssex and State of New Jersey, have invented a new and usefulImprovement in an Electrical Cabinet, of which the following is aspecification.

My invention relates to a cabinet for holding money or articles ofvalue, with which an electrical alarm is connected to prevent theopening, breaking through, or carrying away of the same without an alarmbeing sounded; and it consists in double eectrical envelopes insulated,forming interlinings throughout the whole of the body and the door; inhaving all the apparatus for operating contained within the cabinet; andin the arrangement of the circuitclosers, as herein set forth.

Figure l is a plan below the top. Fig. 2 is a side elevation, showing acabinet open.

In my construction, A is a switch connected with the outer envelope, B,at 'i, which, by closing the door, forms a contact with a button, (3,which is connected by a wire, D, with the spring E, which forms acontact with a plate, a, united with theinnerenvt-lopeorlining,F, at 0.These two, when closed, connect the outer and inner linings and allowthe current to pass from the battery G through the bell H to ring it,and back to the battery again in the manner following: passing from thepole I of the battery on a wire, 0, through the top hinge, K, to thebell on the door; thence through the bell to the inner lining, which,being connected with theinner lining of the body through the lowerhinge, K, allows a current to pass to the inner lining at L, and throughit to the point e; thence on a wire to the plate a, across the spring E,and through the wire D to the button 0, and across the switch A to theouter lining at i; and thence through the outer lining to the point 0?,and thence by a wire to the other pole, N, of the battery. Theelectrical envelopes or linings may be of any metallic-covered paper,wire-cloth, tinfoil, or any other conductor ofelectricity. Thus it willbe seen that by closing the door the switch A is thrown on the point C,while the spring E, by the same, is thrown ofl' from the plate a,breaking the connection between theinner and the outer linings, andtherefore breaking the circuit. On opening the door the switch A remainson the point C, while the spring E comes forward and forms a contactwith the plate a,

(No model.)

thereby completing the circuit and causing the bell to ring; and it willbe seen that any attempt to bore through the cabinet with a metal toolwill make a connection between the inner and outer linings and ring thebell.

In addition to the above I have an auxiliary attachment, which, indeed,may be used independently, consisting in a gravity circuit-closer, asfollows: I have a small metallic ball, 0, resting in a metallic cup, I,and covered with an inverted metallic cup, Q, so arranged that themoment the cabinet is tilted or thrown ofi' from a level the ball willform a contact between the two cups and allow the current to passthrough the bell and ring it, as follows: 1 assing from the pole I,through the Wire 0, and through the hinge K, and again the wire 0,through the bell to the inner lining of the door, and through the innerlining to the hinge K, and thence to the inner lining of the body at L;thence through the inner lining, at the point B, through the wireS tothe cup Q, through the ball 0 to the cup P; thence through the wire T tothe other pole, N, of the battery.

The middle hinge, A, serves to connect the outer lining of the door withthe outer lining of the body. 7

This cabinet will work in connection with any burglar-alarm system atthe houses, and may work independent of them while so connected, and isadapted equally well to desks, closets, safes, &c.

I claim 1. An electrical cabinet having within itself a battery andbell, a gravity circuit-closer, a spring and switch for the door, andtwo separate and distinct conducting-linings, the whole forming an opencircuit which may be closed by the slightest inclination of the cabinetfrom a perpendicular in any direction by opening the door, or bypiercing or otherwise bringing in contact at any point the twoconducting-linings, substantially as specified.

2. Two separate plates or sheets of conducting material under anon-conducting exterior,

. each sheet bein g prevented from forming a contact with the other byaperfect insulator placed between them, and the two, in connection withthe hinges of the door, forming two separate conducting-envelopes forsounding an alarm upon being compressed or pierced.

3. In a cabinet having the combination of the two separateconducting-linings, the switch A and spring E, and the battery and bellforming an open circuit, substantially as and for the purpose.specified.

4. In a cabinet substantially as described, having the combination ofthebattery and bell, the ball 0, iuclosed between the two circular cups Pand Q, forming an open circuit, sub stantially as and for the purposeset forth.

5. In a cabinet constructed and arranged 10 substantially as describedand shown, the switch A and spring E for closing and opening the circuitby closing and opening the door, substantially as specified.

ELIPHALET W. SMITH.

Vitnesses HORACE HARRIS, S. 1-. S'IEADMAN.

